path: root/drivers/infiniband/hw
diff options
authorVipul Pandya <vipul@chelsio.com>2012-05-18 15:29:26 +0530
committerRoland Dreier <roland@purestorage.com>2012-05-18 13:22:28 -0700
commit3069ee9bc451d90a2fa8c3c7ef2774744d9d3bb0 (patch)
treed07c27b92130db1e5c76cd6a3d38899c00900325 /drivers/infiniband/hw
parentcxgb4: Common platform specific changes for DB Drop Recovery (diff)
cxgb4: DB Drop Recovery for RDMA and LLD queues
recover LLD EQs for DB drop interrupts. This includes adding a new db_lock, a spin lock disabling BH too, used by the recovery thread and the ring_tx_db() paths to allow db drop recovery. Clean up initial DB avoidance code. Add read_eq_indices() - this allows the LLD to use the PCIe mw to efficiently read hw eq contexts. Add cxgb4_sync_txq_pidx() - called by iw_cxgb4 to sync up the sw/hw pidx value. Add flush_eq_cache() and cxgb4_flush_eq_cache(). This allows iw_cxgb4 to flush the sge eq context cache before beginning db drop recovery. Add module parameter, dbfoifo_int_thresh, to allow tuning the db interrupt threshold value. Add dbfifo_int_thresh to cxgb4_lld_info so iw_cxgb4 knows the threshold. Add module parameter, dbfoifo_drain_delay, to allow tuning the amount of time delay between DB FULL and EMPTY upcalls to iw_cxgb4. Signed-off-by: Vipul Pandya <vipul@chelsio.com> Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
Diffstat (limited to 'drivers/infiniband/hw')
0 files changed, 0 insertions, 0 deletions